Mark m



(No Model.)

M. M. NIOHOLLS.

TUBING.

Patented Nov. 16, 1897.

WlTNESSES ATTORNEYS THE nonms Ffzns u Mom-undo WASNINGYOnt n. c.

purposes.

UNITED STATES,

PATENT OFFICE.

MARK M. NICHOLLS, on NEW YORK, N. Y.

TUBING.

SPECIFICATION forming part of Letters Patent No. 593,726, dated November 16, 1897.

Application filed February 5, 1897- Serial No. 622,128- (No model.) a

To all whom it may concern:

Be it known that 1, MARK M. NIOHOLLS, a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Tubing, of which the following is a specification.

My invention relates to composite tubing, which is more particularly adapted for use in conveying gas to gas-stoves, drop-lamps, &c. but it obviously may be employed for other The object of my invention is to overcome disadvantages heretofore found in the manufacture of tubing of this character and to produce an efficient tubing which can be manufactured at a small cost.

To this end my invention consists in tubing of the character hereinafter described and claimed.

In order that my invention may be clearly understood by those skilled in the art to which it appertains, reference is had to the accompanying drawings, wherein Figure 1 represents a mutilated side View of a section of tubing made in accordance with my invention. Fig.2 is a transverse section of the same on line 2 2 of Fig. 1.

In the drawings, a represents a coiled wire, which in accordance with my invention is first coated with a moistur'e-repellant material, as indicated at b. The moisture-repellant material preferably used by me is boiled linseedoil, which is allowed to dry upon the coil, and the coil is then surrounded with a textile coV: ering, such as a braided sheath 0, which may be made by passing the coil through a braiding-machine in the well-known manner. The dry tubular braided sheath 0 is next coated with a layer of a compound composed of glue and glycerin, as indicated at d, which'is allowed to dry, but does not harden. Over this coating of glue and glycerin a tubular textile sheath 6 may be braided in the ordinary manner.

It will be observed that the coating of moisture-repellant material or oil b upon the wire coil prevents it from corroding by the action of the'gas or other fluids passing through the tubing and likewise prevents the coil from rusting by the transmission of moisture from the coating of glue and glycerin through the tubular sheath 0. It has been found that some protection against the liability of corrosion and rust from the above-mentioned causes is absolutely necessary.

It will be seen that by my invention the amount of oil used in the manufacture of tubing isconfined to the amount employed in coating the wire coil and that an efficient tubing may be produced at a small cost.

Having described my invention, what I claim, and desire to'secure by Letters Patent, is I 1. As a new and improved article of manufacture, a tubing comprising a wire coil coated with a moisture-repellant material so as to leave the interstices between the convolutions of the coil free from coating material, a texfacture a tubing comprising a wire coil coated with linseed-oil, a textile sheath next to and surrounding said coated coil and a layer of a compound of glue and glycerin next to and surrounding said textile sheath.

- MARK M. NIOHOLLS.

Witnesses:

JOHN F. 801%, ALBERT E.'SOHL. 

